Timing on interference engines

engines
timing-belts

#1

I have a Ford Taurus Sho and the gear on the cam has came loose and spinning I had heard that this could cause the values and pistons to hit, bending and possible breaking them. I want to know if anyone had any info on this and if it happens all the time. And if I can tell without taking the engine apart.


#2

It would help to know the year and which engine you have; the 6 or the 8 cylinder.

From memory, I think the 6s are non-interference and the 8s ARE interference. It seems the 8s also had a problem with cam sprockets coming loos due to the method of attachment - swagging - which basically means crunched together.

The easiest method to determine engine damage is to remove a valve cover or two. Cylinders with bent intake valves will generally have a very loose valve lash, or adjustment.
With both valves closed on a particular cylinder, compressed air can be applied to the cylinder, or cylinders, in question. If air hisses back out the intake, you’re toast on the top end anyway.


#3

the engine is the 8 and it is an interference


#4

the car is a 97 sho v8 and I am wondering if it is worth fixing or if I should just sell it as is.


#5

It’s going to cost you thousands to fix it, if you’re lucky the book value of the car is $2000. NOT worth it IMHO.